EP1104540B1 - Element d'amor age comportant une source de lumiere laser - Google Patents

Element d'amor age comportant une source de lumiere laser Download PDF

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Publication number
EP1104540B1
EP1104540B1 EP99944343A EP99944343A EP1104540B1 EP 1104540 B1 EP1104540 B1 EP 1104540B1 EP 99944343 A EP99944343 A EP 99944343A EP 99944343 A EP99944343 A EP 99944343A EP 1104540 B1 EP1104540 B1 EP 1104540B1
Authority
EP
European Patent Office
Prior art keywords
laser light
laser
explosive
ignition
ignition element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99944343A
Other languages
German (de)
English (en)
Other versions
EP1104540A1 (fr
Inventor
Heinz Kern
Gerhard Kordel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP1104540A1 publication Critical patent/EP1104540A1/fr
Application granted granted Critical
Publication of EP1104540B1 publication Critical patent/EP1104540B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/113—Initiators therefor activated by optical means, e.g. laser, flashlight

Definitions

  • the invention relates to an ignition element with a laser light source according to the Preamble of the first claim.
  • Ignition elements are known in which the one which triggers the initial ignition Explosive is ignited by means of a laser light source.
  • the laser light source is placed outside the room containing the explosive.
  • the laser light will either through an optical fiber or through a through-channel to the explosive fed to the initial spark.
  • laser optics is usually required to get the laser light in to focus on the explosive at the intensity required for ignition.
  • the Explosion of the initial detonator ignites the charge of a detonation body, for example a floor.
  • the detonation body can also be a Contain a charge with an explosive, for the ignition of which the energy of the Laser light is sufficient so that no initial ignition is required.
  • the laser light is transmitted from the Laser light source supplied to the explosive of the ignition element. It is between coupling optics to the light guide and the explosive of the ignition element connected.
  • the laser light source is like this arranged that the laser light through an opening in a sign that the Separates the laser light source from the explosive of the ignition element, and one on it subsequent insulated pipe containing the filter and amplifier optics onto the Explosive of the ignition element is conducted.
  • the known ignition elements have the disadvantage that the light guide with its coupling optics or the Laser and light source filter and amplifier optics complex are.
  • the transmission of laser light by means of optical Equipment or fiber optic transmission and coupling losses.
  • An ignition element for an airbag is known from US Pat. No. 5,660,413.
  • the Explosive is from the laser diode through a gap and an attached to it subsequent biconcave glass seal separated.
  • DE 38 38 896 A1 describes a storage layer known laser-initiable ignition / ignition element. It has a window through which the Laser light can reach the explosive. The window is with one light-absorbing storage layer occupied by which the laser pulses in temporally stretched heat pulses are converted.
  • the object of the present invention is an ignition element with a laser light source to introduce, which is easier and cheaper to manufacture and the above mentioned Does not have disadvantages.
  • the Laser light source is a laser diode that is only for single use is determined.
  • the explosive to be ignited can be directly on the for the Laser light permeable part of the housing of the laser diode, the exit surface of the Laser lights, lie on.
  • the manufacture of ignition elements is simplified and cheaper itself, as there is no coupling of the laser light through optics or a light guide is required. In addition, transmission and coupling losses are avoided.
  • the explosive to be ignited facing part of the housing of the laser diode which is permeable to the laser light be occupied by a substance that the absorption of laser light, especially the Infrared portion, improved. This increases the effect of the laser light.
  • Carbon or black metal oxides, such as copper, iron and Manganese oxides absorb infrared light particularly well.
  • the absorption of the Materials that improve laser light are added to the explosive to be ignited his.
  • the prerequisite is that the intended effect of the Explosive is not affected.
  • the admixture makes it unnecessary separate operation to cover the laser diode with the absorbent.
  • the laser diode can be embedded in the explosive to be ignited, it is expedient if their electrical connections are exposed. At a embedded laser diode is used to initiate the energy required for ignition a larger surface area is available.
  • the explosive and the laser diode be surrounded by a common housing. This allows especially with initial fuses, the explosive and the laser diode as Ignition device summarized in a one-piece component of small dimensions become.
  • Versions in which the explosive and the laser diode in one Housings are summarized are particularly suitable for gas generators, such as they are used, for example, in airbags or belt tensioners.
  • FIG. 1 shows an ignition element 1 in a detonation body 2 as a sectional view.
  • the Ignition element 1 in the present exemplary embodiment consists of a laser diode 3, which together with the explosive 4 triggering the initial ignition in one common housing 5 is housed.
  • This ignition element 1 is in the Housing 6 of the detonation body 2 is used and extends into its explosive or Powder charge 7.
  • the connections 9 protrude from the housing 8 of the laser diode 3 Power supply to the control chip 10 of the laser diode 3.
  • the housing 12 of the laser diode 3 is transparent to the laser light 13.
  • the one Explosive 4 for the initial ignition part of the laser light 13 permeable housing part 12 forms a window 14 in the common housing 5 of laser diode 3 and explosive 4.
  • the laser light 13 occurs at a certain angle in the Rule between 20 ° and 30 ° from which the laser 11 strikes the explosive 4 and ignite him.
  • the energy density of the laser light 13 is dependent on the type of Laser diode 3 and thus its output power, from the exit angle of the laser light 13 and the distance between the laser 11 and the explosive 4.
  • the ignition behavior of the cargo can be significantly improved if the window 14 of the laser diode 3 is coated with a substance 15, which absorbs the laser light 13, especially the infrared portion, improved.
  • FIG 2 shows another embodiment of the invention.
  • the embodiment of the laser diode does not differ in its construction from that Laser diode in the embodiment of Figure 1. For this reason matching components designated with the same reference numerals.
  • the ignition element 101 in the present exemplary embodiment consists of the Laser diode 3 directly in the explosive charge 107 of the detonation body 102 is inserted and by him, except for the electrical connections 9, completely is surrounded.
  • the charge 107 does not require any in the present exemplary embodiment Initial spark.
  • the energy by the laser light 13 from the laser diode 3 in the Charge 107 is introduced is sufficient to ignite it.
  • the housing 106 of the Detonation body 102 encloses both charge 107 and that Ignition element 101.
  • a substance 115 is direct to the explosive of charge 107 admixed, the absorption of the laser light 13, in particular his Infrared portion, improved.
  • Ignition elements Because of their simple structure and small size, they are suitable Ignition elements according to the invention in particular for installation in gas generators used in airbags and belt tensioners.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Semiconductor Lasers (AREA)
  • Air Bags (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (6)

  1. Elément d'amorçage comportant une source de lumière laser pour amorcer la matière explosive dans un détonateur, caractérisé en ce que la source de lumière laser est une diode laser (3), et en ce que la matière explosive (4, 107) à amorcer est disposée directement sur la partie (12) perméable à la lumière laser (13) du corps (8) de la diode laser (3).
  2. Elément d'amorçage selon la revendication 1, caractérisé en ce que la partie (12) perméable à la lumière laser (13) du corps (8) de la diode laser (3) est garnie d'une substance (15) améliorant l'absorption de la lumière laser (13), en particulier de la fraction infrarouge.
  3. Elément d'amorçage selon la revendication 1, caractérisé en ce qu'à la matière explosive (107) à amorcer est mélangée une substance (115) améliorant l'absorption de la lumière laser (13), en particulier de la fraction infrarouge.
  4. Elément d'amorçage selon une des revendications 1 à 3, caractérisé en ce que la matière explosive (4, 107) et la diode laser (3) sont entourées d'un boítier (5, 106) commun.
  5. Elément d'amorçage selon une des revendications 1 à 4, caractérisé en ce que la diode laser (3) est noyée dans la matière explosive (107).
  6. Elément d'amorçage selon une des revendications 1 à 5, caractérisé en ce qu'il est mis en oeuvre dans des générateurs de gaz, qui sont utilisés notamment dans des coussins gonflables et des prétensionneurs de ceinture.
EP99944343A 1998-08-20 1999-08-07 Element d'amor age comportant une source de lumiere laser Expired - Lifetime EP1104540B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19837839A DE19837839A1 (de) 1998-08-20 1998-08-20 Zündelement mit einer Laserlichtquelle
DE19837839 1998-08-20
PCT/EP1999/005719 WO2000011428A1 (fr) 1998-08-20 1999-08-07 Element d'amorçage comportant une source de lumiere laser

Publications (2)

Publication Number Publication Date
EP1104540A1 EP1104540A1 (fr) 2001-06-06
EP1104540B1 true EP1104540B1 (fr) 2003-04-09

Family

ID=7878175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944343A Expired - Lifetime EP1104540B1 (fr) 1998-08-20 1999-08-07 Element d'amor age comportant une source de lumiere laser

Country Status (7)

Country Link
US (1) US6499404B1 (fr)
EP (1) EP1104540B1 (fr)
JP (1) JP2002537534A (fr)
AT (1) ATE237119T1 (fr)
DE (2) DE19837839A1 (fr)
ES (1) ES2196850T3 (fr)
WO (1) WO2000011428A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE518183C2 (sv) * 2001-03-14 2002-09-03 Bofors Bepab Ab Sätt och anordning för initiering av explosivämnesladdningar
US7201103B1 (en) 2002-02-25 2007-04-10 Bofors Bepab Ab Method for initiation and ignition of explosive charges through self-destruction of a laser source
FR2888234B1 (fr) 2005-07-05 2008-05-02 Saint Louis Inst Composition energetique dopee optiquement
AU2008229625B2 (en) * 2007-03-16 2012-06-14 Orica Explosives Technology Pty Ltd Initiation of explosives materials
GB2448771A (en) * 2007-04-28 2008-10-29 S Rafi Ahmad Means for achieving low order detonation of a device filled with a metal oxyanion / bidentate fuel ligand complex by means of a low power diode laser
JP2009008325A (ja) * 2007-06-28 2009-01-15 Ihi Aerospace Co Ltd 爆発物の処理方法
US7942097B1 (en) * 2008-03-06 2011-05-17 Sandia Corporation Modular initiator with integrated optical diagnostic
US20130098257A1 (en) * 2010-05-07 2013-04-25 Orica International Pte Ltd Method of blasting
FR2978762B1 (fr) * 2011-08-01 2013-08-02 Nexter Munitions Detonateur de securite
US11131530B2 (en) 2018-01-29 2021-09-28 Lawrence Livermore National Security, Llc Opto-thermal laser detonator
US11585643B2 (en) * 2018-03-08 2023-02-21 Orica International Pte Ltd Systems, apparatuses, devices, and methods for initiating or detonating tertiary explosive media by way of photonic energy
US11407378B2 (en) * 2019-03-18 2022-08-09 Andras Fenyves Airbag system and related methods of inflating an airbag
CN111121545A (zh) * 2019-12-10 2020-05-08 南京理工大学 一种光纤式激光点火器及点火系统
US11209257B2 (en) 2019-12-12 2021-12-28 Northrop Grumman Systems Corporation Voltage polarity immunity using reverse parallel laser diodes
DE102022000418B4 (de) 2022-02-03 2024-12-19 TDW Gesellschaft für verteidigungstechnische Wirksysteme mit beschränkter Haftung Anordnung zur Initiierung eines Sprengstoffs, Verfahren zur Herstellung einer Anordnung zur Initiierung eines Sprengstoffs, sowie Verfahren zur Initiierung von Sprengstoff
KR20250034578A (ko) * 2023-09-04 2025-03-11 국방과학연구소 레이저 점화 장치
KR102714180B1 (ko) * 2024-06-26 2024-10-11 국방과학연구소 레이저 다이오드 뇌관과 이를 이용하여 전기 격발 신호로 추진장약을 점화하는 화포

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US3362329A (en) 1963-12-10 1968-01-09 Epstein Sidney Electro-explosive devices
US4343242A (en) * 1980-04-28 1982-08-10 Gould Inc. Laser-triggered chemical actuator for high voltage isolation
US4660472A (en) * 1985-10-07 1987-04-28 Morton Thiokol Inc. Optical through bulkhead initiator and safe-arm device
DE3542447C2 (de) * 1985-11-30 1993-11-18 Diehl Gmbh & Co Laserempfindliche Anzündmischung
EP0289184B1 (fr) * 1987-04-30 1991-12-27 Nippon Oil And Fats Company, Limited Détonateur activable par le faisceau d'un laser
DE3838896C2 (de) * 1988-11-17 1999-07-01 Dynamit Nobel Ag Mit einer Speicherschicht versehenes laserinitiierbares Zünd-/Anzündelement
DE3909952A1 (de) * 1989-03-25 1990-09-27 Dynamit Nobel Ag Laserinitiierbares zuend-/anzuendmittel
US5206455A (en) * 1991-03-28 1993-04-27 Quantic Industries, Inc. Laser initiated ordnance systems
US5204490A (en) * 1991-06-21 1993-04-20 Mcdonnell Douglas Corporation Laser diode apparatus for initiation of explosive devices
US5212339A (en) * 1992-03-27 1993-05-18 The United States Of America As Represented By The United States Department Of Energy Explosive laser light initiation of propellants
GB2267330A (en) * 1992-05-23 1993-12-01 Secr Defence Laser ignition of gas generators
US5660413A (en) * 1995-08-24 1997-08-26 Trw Vehicle Safety Systems Inc. Air bag inflator with laser diode initiator
US5756924A (en) * 1995-09-28 1998-05-26 The Regents Of The University Of California Multiple laser pulse ignition method and apparatus
FR2796142B1 (fr) * 1999-07-06 2002-08-09 Saint Louis Inst Detonateur optique a deux etages et a transition choc-detonation

Also Published As

Publication number Publication date
EP1104540A1 (fr) 2001-06-06
ES2196850T3 (es) 2003-12-16
DE19837839A1 (de) 2000-02-24
DE59904975D1 (de) 2003-05-15
ATE237119T1 (de) 2003-04-15
JP2002537534A (ja) 2002-11-05
WO2000011428A1 (fr) 2000-03-02
US6499404B1 (en) 2002-12-31

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